Skip to Main content Skip to Navigation
Journal articles

Importance of Accounting for Detection Heterogeneity When Estimating Abundance: the Case of French Wolves

Abstract : Assessing conservation strategies requires reliable estimates of abundance. Because detecting all individuals is most often impossible in free-ranging populations, estimation procedures have to account for a <1 detection probability. Capture-recapture methods allow biologists to cope with this issue of detectability. Nevertheless, capture-recapture models for open populations are built on the assumption that all individuals share the same detection probability, although detection heterogeneity among individuals has led to underestimating abundance of closed populations. We developed multievent capture-recapture models for an open population and proposed an associated estimator of population size that both account for individual detection heterogeneity (IDH). We considered a two-class mixture model with weakly and highly detectable individuals to account for IDH. In a noninvasive capture-recapture study of wolves we based on genotypes identified in feces and hairs, we found a large underestimation of population size (27% on average) occurred when IDH was ignored.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03499369
Contributor : Olivier Gimenez Connect in order to contact the contributor
Submitted on : Tuesday, January 4, 2022 - 6:52:51 AM
Last modification on : Wednesday, January 5, 2022 - 3:47:17 AM

Files

09-067_CubaynesManuscriptv2.pd...
Files produced by the author(s)

Identifiers

Collections

Citation

Sarah Cubaynes, Roger Pradel, Rémi Choquet, Christophe Duchamp, Jean-Michel Gaillard, et al.. Importance of Accounting for Detection Heterogeneity When Estimating Abundance: the Case of French Wolves. Conservation Biology, Wiley, 2010, 24, pp.621 - 626. ⟨10.1111/j.1523-1739.2009.01431.x⟩. ⟨hal-03499369⟩

Share

Metrics

Record views

15

Files downloads

51